Home / 86,630.48-129,841.08-42,190.64

Finding the Fourth Proportional to 86,630.48, 129,841.08 and 42,190.64

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Solution

The fourth proportional to 86,630.48, 129,841.08 and 42,190.64 is: 63,235.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,630.48 : 129,841.08 = 42,190.64 : x
  2. Step 2: Convert to fraction form
    86,630.48/129,841.08 = 42,190.64/x
  3. Step 3: Cross multiply
    86,630.48x = 129,841.08 × 42,190.64
  4. Step 4: Simplify right side
    86,630.48x = 5,478,078,263.49
  5. Step 5: Solve for x
    x = 5,478,078,263.49/86,630.48
  6. Step 6: Final answer
    x = 63,235.00

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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.