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Finding the Fourth Proportional to 61,129.40, 91,607.70 and 37,686.20

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Solution

The fourth proportional to 61,129.40, 91,607.70 and 37,686.20 is: 56,476.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,129.40 : 91,607.70 = 37,686.20 : x
  2. Step 2: Convert to fraction form
    61,129.40/91,607.70 = 37,686.20/x
  3. Step 3: Cross multiply
    61,129.40x = 91,607.70 × 37,686.20
  4. Step 4: Simplify right side
    61,129.40x = 3,452,346,103.74
  5. Step 5: Solve for x
    x = 3,452,346,103.74/61,129.40
  6. Step 6: Final answer
    x = 56,476.03

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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.