Home / 87,381.40-130,985.70-34,720.60

Finding the Fourth Proportional to 87,381.40, 130,985.70 and 34,720.60

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Solution

The fourth proportional to 87,381.40, 130,985.70 and 34,720.60 is: 52,046.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,381.40 : 130,985.70 = 34,720.60 : x
  2. Step 2: Convert to fraction form
    87,381.40/130,985.70 = 34,720.60/x
  3. Step 3: Cross multiply
    87,381.40x = 130,985.70 × 34,720.60
  4. Step 4: Simplify right side
    87,381.40x = 4,547,902,095.42
  5. Step 5: Solve for x
    x = 4,547,902,095.42/87,381.40
  6. Step 6: Final answer
    x = 52,046.57

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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.