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Finding the Fourth Proportional to 86,478.80, 129,483.71 and 44,838.32

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Solution

The fourth proportional to 86,478.80, 129,483.71 and 44,838.32 is: 67,135.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,478.80 : 129,483.71 = 44,838.32 : x
  2. Step 2: Convert to fraction form
    86,478.80/129,483.71 = 44,838.32/x
  3. Step 3: Cross multiply
    86,478.80x = 129,483.71 × 44,838.32
  4. Step 4: Simplify right side
    86,478.80x = 5,805,831,799.58
  5. Step 5: Solve for x
    x = 5,805,831,799.58/86,478.80
  6. Step 6: Final answer
    x = 67,135.90

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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.