Home / 86,648.16-129,916.20-56,976.12

Finding the Fourth Proportional to 86,648.16, 129,916.20 and 56,976.12

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Solution

The fourth proportional to 86,648.16, 129,916.20 and 56,976.12 is: 85,427.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,648.16 : 129,916.20 = 56,976.12 : x
  2. Step 2: Convert to fraction form
    86,648.16/129,916.20 = 56,976.12/x
  3. Step 3: Cross multiply
    86,648.16x = 129,916.20 × 56,976.12
  4. Step 4: Simplify right side
    86,648.16x = 7,402,121,001.14
  5. Step 5: Solve for x
    x = 7,402,121,001.14/86,648.16
  6. Step 6: Final answer
    x = 85,427.33

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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.