Home / 42,830,818.80-64,246,226.40-12,538,681.68

Finding the Fourth Proportional to 42,830,818.80, 64,246,226.40 and 12,538,681.68

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Solution

The fourth proportional to 42,830,818.80, 64,246,226.40 and 12,538,681.68 is: 18,808,021.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,830,818.80 : 64,246,226.40 = 12,538,681.68 : x
  2. Step 2: Convert to fraction form
    42,830,818.80/64,246,226.40 = 12,538,681.68/x
  3. Step 3: Cross multiply
    42,830,818.80x = 64,246,226.40 × 12,538,681.68
  4. Step 4: Simplify right side
    42,830,818.80x = 805,562,981,970,812.38
  5. Step 5: Solve for x
    x = 805,562,981,970,812.38/42,830,818.80
  6. Step 6: Final answer
    x = 18,808,021.99

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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.