Home / 86,312.76-129,500.28-30,161.16

Finding the Fourth Proportional to 86,312.76, 129,500.28 and 30,161.16

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Solution

The fourth proportional to 86,312.76, 129,500.28 and 30,161.16 is: 45,252.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,312.76 : 129,500.28 = 30,161.16 : x
  2. Step 2: Convert to fraction form
    86,312.76/129,500.28 = 30,161.16/x
  3. Step 3: Cross multiply
    86,312.76x = 129,500.28 × 30,161.16
  4. Step 4: Simplify right side
    86,312.76x = 3,905,878,665.12
  5. Step 5: Solve for x
    x = 3,905,878,665.12/86,312.76
  6. Step 6: Final answer
    x = 45,252.62

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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.