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Finding the Fourth Proportional to 86,038.97, 118,737.72 and 47,798.55

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Solution

The fourth proportional to 86,038.97, 118,737.72 and 47,798.55 is: 65,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,038.97 : 118,737.72 = 47,798.55 : x
  2. Step 2: Convert to fraction form
    86,038.97/118,737.72 = 47,798.55/x
  3. Step 3: Cross multiply
    86,038.97x = 118,737.72 × 47,798.55
  4. Step 4: Simplify right side
    86,038.97x = 5,675,490,846.31
  5. Step 5: Solve for x
    x = 5,675,490,846.31/86,038.97
  6. Step 6: Final answer
    x = 65,964.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.