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Finding the Fourth Proportional to 48,557.80, 72,836.70 and 31,047.40

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Solution

The fourth proportional to 48,557.80, 72,836.70 and 31,047.40 is: 46,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,557.80 : 72,836.70 = 31,047.40 : x
  2. Step 2: Convert to fraction form
    48,557.80/72,836.70 = 31,047.40/x
  3. Step 3: Cross multiply
    48,557.80x = 72,836.70 × 31,047.40
  4. Step 4: Simplify right side
    48,557.80x = 2,261,390,159.58
  5. Step 5: Solve for x
    x = 2,261,390,159.58/48,557.80
  6. Step 6: Final answer
    x = 46,571.10

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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.