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Finding the Fourth Proportional to 85,248,416.80, 127,725,658.80 and 39,716,826.40

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Solution

The fourth proportional to 85,248,416.80, 127,725,658.80 and 39,716,826.40 is: 59,506,768.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,248,416.80 : 127,725,658.80 = 39,716,826.40 : x
  2. Step 2: Convert to fraction form
    85,248,416.80/127,725,658.80 = 39,716,826.40/x
  3. Step 3: Cross multiply
    85,248,416.80x = 127,725,658.80 × 39,716,826.40
  4. Step 4: Simplify right side
    85,248,416.80x = 5,072,857,817,385,232
  5. Step 5: Solve for x
    x = 5,072,857,817,385,232/85,248,416.80
  6. Step 6: Final answer
    x = 59,506,768.66

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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.