Home / 77,561.28-107,031.60-47,397.06

Finding the Fourth Proportional to 77,561.28, 107,031.60 and 47,397.06

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Solution

The fourth proportional to 77,561.28, 107,031.60 and 47,397.06 is: 65,406.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,561.28 : 107,031.60 = 47,397.06 : x
  2. Step 2: Convert to fraction form
    77,561.28/107,031.60 = 47,397.06/x
  3. Step 3: Cross multiply
    77,561.28x = 107,031.60 × 47,397.06
  4. Step 4: Simplify right side
    77,561.28x = 5,072,983,167.10
  5. Step 5: Solve for x
    x = 5,072,983,167.10/77,561.28
  6. Step 6: Final answer
    x = 65,406.13

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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.