Home / 85,703,619.60-128,555,429.40-63,879,109.20

Finding the Fourth Proportional to 85,703,619.60, 128,555,429.40 and 63,879,109.20

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Solution

The fourth proportional to 85,703,619.60, 128,555,429.40 and 63,879,109.20 is: 95,818,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,703,619.60 : 128,555,429.40 = 63,879,109.20 : x
  2. Step 2: Convert to fraction form
    85,703,619.60/128,555,429.40 = 63,879,109.20/x
  3. Step 3: Cross multiply
    85,703,619.60x = 128,555,429.40 × 63,879,109.20
  4. Step 4: Simplify right side
    85,703,619.60x = 8,212,006,312,895,491
  5. Step 5: Solve for x
    x = 8,212,006,312,895,491/85,703,619.60
  6. Step 6: Final answer
    x = 95,818,663.80

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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.