Home / 55,915.08-77,162.27-31,720.47

Finding the Fourth Proportional to 55,915.08, 77,162.27 and 31,720.47

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Solution

The fourth proportional to 55,915.08, 77,162.27 and 31,720.47 is: 43,773.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,915.08 : 77,162.27 = 31,720.47 : x
  2. Step 2: Convert to fraction form
    55,915.08/77,162.27 = 31,720.47/x
  3. Step 3: Cross multiply
    55,915.08x = 77,162.27 × 31,720.47
  4. Step 4: Simplify right side
    55,915.08x = 2,447,623,312.06
  5. Step 5: Solve for x
    x = 2,447,623,312.06/55,915.08
  6. Step 6: Final answer
    x = 43,773.94

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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.