Home / 72,578,429.40-108,615,701.70-66,531,811.80

Finding the Fourth Proportional to 72,578,429.40, 108,615,701.70 and 66,531,811.80

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Solution

The fourth proportional to 72,578,429.40, 108,615,701.70 and 66,531,811.80 is: 99,566,765.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,578,429.40 : 108,615,701.70 = 66,531,811.80 : x
  2. Step 2: Convert to fraction form
    72,578,429.40/108,615,701.70 = 66,531,811.80/x
  3. Step 3: Cross multiply
    72,578,429.40x = 108,615,701.70 × 66,531,811.80
  4. Step 4: Simplify right side
    72,578,429.40x = 7,226,399,424,029,340
  5. Step 5: Solve for x
    x = 7,226,399,424,029,340/72,578,429.40
  6. Step 6: Final answer
    x = 99,566,765.00

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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.