Home / 84,985,872.30-127,478,808.45-77,899,992.30

Finding the Fourth Proportional to 84,985,872.30, 127,478,808.45 and 77,899,992.30

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Solution

The fourth proportional to 84,985,872.30, 127,478,808.45 and 77,899,992.30 is: 116,849,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,985,872.30 : 127,478,808.45 = 77,899,992.30 : x
  2. Step 2: Convert to fraction form
    84,985,872.30/127,478,808.45 = 77,899,992.30/x
  3. Step 3: Cross multiply
    84,985,872.30x = 127,478,808.45 × 77,899,992.30
  4. Step 4: Simplify right side
    84,985,872.30x = 9,930,598,196,668,174
  5. Step 5: Solve for x
    x = 9,930,598,196,668,174/84,985,872.30
  6. Step 6: Final answer
    x = 116,849,988.45

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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.