Home / 86,117.40-129,139.65-26,937.18

Finding the Fourth Proportional to 86,117.40, 129,139.65 and 26,937.18

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Solution

The fourth proportional to 86,117.40, 129,139.65 and 26,937.18 is: 40,394.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,117.40 : 129,139.65 = 26,937.18 : x
  2. Step 2: Convert to fraction form
    86,117.40/129,139.65 = 26,937.18/x
  3. Step 3: Cross multiply
    86,117.40x = 129,139.65 × 26,937.18
  4. Step 4: Simplify right side
    86,117.40x = 3,478,657,997.19
  5. Step 5: Solve for x
    x = 3,478,657,997.19/86,117.40
  6. Step 6: Final answer
    x = 40,394.37

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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.