Home / 77,145,262.80-115,718,543.02-19,637,543.76

Finding the Fourth Proportional to 77,145,262.80, 115,718,543.02 and 19,637,543.76

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Solution

The fourth proportional to 77,145,262.80, 115,718,543.02 and 19,637,543.76 is: 29,456,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,145,262.80 : 115,718,543.02 = 19,637,543.76 : x
  2. Step 2: Convert to fraction form
    77,145,262.80/115,718,543.02 = 19,637,543.76/x
  3. Step 3: Cross multiply
    77,145,262.80x = 115,718,543.02 × 19,637,543.76
  4. Step 4: Simplify right side
    77,145,262.80x = 2,272,427,952,398,692.50
  5. Step 5: Solve for x
    x = 2,272,427,952,398,692.50/77,145,262.80
  6. Step 6: Final answer
    x = 29,456,480.80

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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.