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Finding the Fourth Proportional to 86,841.68, 130,058.36 and 42,328.92

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Solution

The fourth proportional to 86,841.68, 130,058.36 and 42,328.92 is: 63,393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,841.68 : 130,058.36 = 42,328.92 : x
  2. Step 2: Convert to fraction form
    86,841.68/130,058.36 = 42,328.92/x
  3. Step 3: Cross multiply
    86,841.68x = 130,058.36 × 42,328.92
  4. Step 4: Simplify right side
    86,841.68x = 5,505,229,915.77
  5. Step 5: Solve for x
    x = 5,505,229,915.77/86,841.68
  6. Step 6: Final answer
    x = 63,393.87

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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.