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Finding the Fourth Proportional to 93,486.08, 129,009.84 and 57,661.76

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Solution

The fourth proportional to 93,486.08, 129,009.84 and 57,661.76 is: 79,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,486.08 : 129,009.84 = 57,661.76 : x
  2. Step 2: Convert to fraction form
    93,486.08/129,009.84 = 57,661.76/x
  3. Step 3: Cross multiply
    93,486.08x = 129,009.84 × 57,661.76
  4. Step 4: Simplify right side
    93,486.08x = 7,438,934,431.72
  5. Step 5: Solve for x
    x = 7,438,934,431.72/93,486.08
  6. Step 6: Final answer
    x = 79,572.64

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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.