Home / 57,091,143.17-78,785,855.53-30,985,661.36

Finding the Fourth Proportional to 57,091,143.17, 78,785,855.53 and 30,985,661.36

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Solution

The fourth proportional to 57,091,143.17, 78,785,855.53 and 30,985,661.36 is: 42,760,254.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,091,143.17 : 78,785,855.53 = 30,985,661.36 : x
  2. Step 2: Convert to fraction form
    57,091,143.17/78,785,855.53 = 30,985,661.36/x
  3. Step 3: Cross multiply
    57,091,143.17x = 78,785,855.53 × 30,985,661.36
  4. Step 4: Simplify right side
    57,091,143.17x = 2,441,231,838,939,070
  5. Step 5: Solve for x
    x = 2,441,231,838,939,070/57,091,143.17
  6. Step 6: Final answer
    x = 42,760,254.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.