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Finding the Fourth Proportional to 72,889.14, 100,552.65 and 42,655.95

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Solution

The fourth proportional to 72,889.14, 100,552.65 and 42,655.95 is: 58,845.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,889.14 : 100,552.65 = 42,655.95 : x
  2. Step 2: Convert to fraction form
    72,889.14/100,552.65 = 42,655.95/x
  3. Step 3: Cross multiply
    72,889.14x = 100,552.65 × 42,655.95
  4. Step 4: Simplify right side
    72,889.14x = 4,289,168,810.77
  5. Step 5: Solve for x
    x = 4,289,168,810.77/72,889.14
  6. Step 6: Final answer
    x = 58,845.10

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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.