Home / 59,981.20-89,971.80-57,421.60

Finding the Fourth Proportional to 59,981.20, 89,971.80 and 57,421.60

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Solution

The fourth proportional to 59,981.20, 89,971.80 and 57,421.60 is: 86,132.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,981.20 : 89,971.80 = 57,421.60 : x
  2. Step 2: Convert to fraction form
    59,981.20/89,971.80 = 57,421.60/x
  3. Step 3: Cross multiply
    59,981.20x = 89,971.80 × 57,421.60
  4. Step 4: Simplify right side
    59,981.20x = 5,166,324,710.88
  5. Step 5: Solve for x
    x = 5,166,324,710.88/59,981.20
  6. Step 6: Final answer
    x = 86,132.40

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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.