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Finding the Fourth Proportional to 61,307.64, 91,912.59 and 56,387.16

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Solution

The fourth proportional to 61,307.64, 91,912.59 and 56,387.16 is: 84,535.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,307.64 : 91,912.59 = 56,387.16 : x
  2. Step 2: Convert to fraction form
    61,307.64/91,912.59 = 56,387.16/x
  3. Step 3: Cross multiply
    61,307.64x = 91,912.59 × 56,387.16
  4. Step 4: Simplify right side
    61,307.64x = 5,182,689,918.34
  5. Step 5: Solve for x
    x = 5,182,689,918.34/61,307.64
  6. Step 6: Final answer
    x = 84,535.79

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1.5x scale

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.