Home / 61,280,899.83-91,920,562.40-20,359,155.51

Finding the Fourth Proportional to 61,280,899.83, 91,920,562.40 and 20,359,155.51

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Solution

The fourth proportional to 61,280,899.83, 91,920,562.40 and 20,359,155.51 is: 30,538,471.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,280,899.83 : 91,920,562.40 = 20,359,155.51 : x
  2. Step 2: Convert to fraction form
    61,280,899.83/91,920,562.40 = 20,359,155.51/x
  3. Step 3: Cross multiply
    61,280,899.83x = 91,920,562.40 × 20,359,155.51
  4. Step 4: Simplify right side
    61,280,899.83x = 1,871,425,024,366,463
  5. Step 5: Solve for x
    x = 1,871,425,024,366,463/61,280,899.83
  6. Step 6: Final answer
    x = 30,538,471.69

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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.