Home / 85,619,701.92-128,428,248.24-59,334,281.76

Finding the Fourth Proportional to 85,619,701.92, 128,428,248.24 and 59,334,281.76

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Solution

The fourth proportional to 85,619,701.92, 128,428,248.24 and 59,334,281.76 is: 89,000,518.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,619,701.92 : 128,428,248.24 = 59,334,281.76 : x
  2. Step 2: Convert to fraction form
    85,619,701.92/128,428,248.24 = 59,334,281.76/x
  3. Step 3: Cross multiply
    85,619,701.92x = 128,428,248.24 × 59,334,281.76
  4. Step 4: Simplify right side
    85,619,701.92x = 7,620,197,867,015,384
  5. Step 5: Solve for x
    x = 7,620,197,867,015,384/85,619,701.92
  6. Step 6: Final answer
    x = 89,000,518.53

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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.