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Finding the Fourth Proportional to 92,781.59, 128,038.52 and 50,340.02

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Solution

The fourth proportional to 92,781.59, 128,038.52 and 50,340.02 is: 69,469.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,781.59 : 128,038.52 = 50,340.02 : x
  2. Step 2: Convert to fraction form
    92,781.59/128,038.52 = 50,340.02/x
  3. Step 3: Cross multiply
    92,781.59x = 128,038.52 × 50,340.02
  4. Step 4: Simplify right side
    92,781.59x = 6,445,461,143.23
  5. Step 5: Solve for x
    x = 6,445,461,143.23/92,781.59
  6. Step 6: Final answer
    x = 69,469.19

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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.