Home / 51,294.16-70,790.80-31,146.40

Finding the Fourth Proportional to 51,294.16, 70,790.80 and 31,146.40

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Solution

The fourth proportional to 51,294.16, 70,790.80 and 31,146.40 is: 42,984.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,294.16 : 70,790.80 = 31,146.40 : x
  2. Step 2: Convert to fraction form
    51,294.16/70,790.80 = 31,146.40/x
  3. Step 3: Cross multiply
    51,294.16x = 70,790.80 × 31,146.40
  4. Step 4: Simplify right side
    51,294.16x = 2,204,878,573.12
  5. Step 5: Solve for x
    x = 2,204,878,573.12/51,294.16
  6. Step 6: Final answer
    x = 42,984.98

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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.