Home / 28,076,621.40-42,114,932.10-12,960,077.40

Finding the Fourth Proportional to 28,076,621.40, 42,114,932.10 and 12,960,077.40

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Solution

The fourth proportional to 28,076,621.40, 42,114,932.10 and 12,960,077.40 is: 19,440,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,076,621.40 : 42,114,932.10 = 12,960,077.40 : x
  2. Step 2: Convert to fraction form
    28,076,621.40/42,114,932.10 = 12,960,077.40/x
  3. Step 3: Cross multiply
    28,076,621.40x = 42,114,932.10 × 12,960,077.40
  4. Step 4: Simplify right side
    28,076,621.40x = 545,812,779,711,744.56
  5. Step 5: Solve for x
    x = 545,812,779,711,744.56/28,076,621.40
  6. Step 6: Final answer
    x = 19,440,116.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.