Home / 31,076,720.88-42,894,145.80-18,357,573.12

Finding the Fourth Proportional to 31,076,720.88, 42,894,145.80 and 18,357,573.12

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Solution

The fourth proportional to 31,076,720.88, 42,894,145.80 and 18,357,573.12 is: 25,338,336.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,076,720.88 : 42,894,145.80 = 18,357,573.12 : x
  2. Step 2: Convert to fraction form
    31,076,720.88/42,894,145.80 = 18,357,573.12/x
  3. Step 3: Cross multiply
    31,076,720.88x = 42,894,145.80 × 18,357,573.12
  4. Step 4: Simplify right side
    31,076,720.88x = 787,432,417,943,440.88
  5. Step 5: Solve for x
    x = 787,432,417,943,440.88/31,076,720.88
  6. Step 6: Final answer
    x = 25,338,336.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.