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Finding the Fourth Proportional to 72,886.95, 100,549.62 and 42,653.75

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Solution

The fourth proportional to 72,886.95, 100,549.62 and 42,653.75 is: 58,842.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,886.95 : 100,549.62 = 42,653.75 : x
  2. Step 2: Convert to fraction form
    72,886.95/100,549.62 = 42,653.75/x
  3. Step 3: Cross multiply
    72,886.95x = 100,549.62 × 42,653.75
  4. Step 4: Simplify right side
    72,886.95x = 4,288,817,851.33
  5. Step 5: Solve for x
    x = 4,288,817,851.33/72,886.95
  6. Step 6: Final answer
    x = 58,842.05

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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.