Home / 86,365.18-129,565.23-36,445.39

Finding the Fourth Proportional to 86,365.18, 129,565.23 and 36,445.39

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Solution

The fourth proportional to 86,365.18, 129,565.23 and 36,445.39 is: 54,675.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,365.18 : 129,565.23 = 36,445.39 : x
  2. Step 2: Convert to fraction form
    86,365.18/129,565.23 = 36,445.39/x
  3. Step 3: Cross multiply
    86,365.18x = 129,565.23 × 36,445.39
  4. Step 4: Simplify right side
    86,365.18x = 4,722,055,337.79
  5. Step 5: Solve for x
    x = 4,722,055,337.79/86,365.18
  6. Step 6: Final answer
    x = 54,675.45

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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.