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Finding the Fourth Proportional to 85,070.79, 127,543.55 and 28,895.76

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Solution

The fourth proportional to 85,070.79, 127,543.55 and 28,895.76 is: 43,322.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,070.79 : 127,543.55 = 28,895.76 : x
  2. Step 2: Convert to fraction form
    85,070.79/127,543.55 = 28,895.76/x
  3. Step 3: Cross multiply
    85,070.79x = 127,543.55 × 28,895.76
  4. Step 4: Simplify right side
    85,070.79x = 3,685,467,665.87
  5. Step 5: Solve for x
    x = 3,685,467,665.87/85,070.79
  6. Step 6: Final answer
    x = 43,322.36

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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.