Home / 42,561,931.80-63,842,897.70-21,038,571.30

Finding the Fourth Proportional to 42,561,931.80, 63,842,897.70 and 21,038,571.30

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Solution

The fourth proportional to 42,561,931.80, 63,842,897.70 and 21,038,571.30 is: 31,557,856.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,561,931.80 : 63,842,897.70 = 21,038,571.30 : x
  2. Step 2: Convert to fraction form
    42,561,931.80/63,842,897.70 = 21,038,571.30/x
  3. Step 3: Cross multiply
    42,561,931.80x = 63,842,897.70 × 21,038,571.30
  4. Step 4: Simplify right side
    42,561,931.80x = 1,343,163,355,260,056
  5. Step 5: Solve for x
    x = 1,343,163,355,260,056/42,561,931.80
  6. Step 6: Final answer
    x = 31,557,856.95

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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.