Home / 85,520,921.40-128,132,082.90-73,576,985.40

Finding the Fourth Proportional to 85,520,921.40, 128,132,082.90 and 73,576,985.40

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Solution

The fourth proportional to 85,520,921.40, 128,132,082.90 and 73,576,985.40 is: 110,237,030.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,520,921.40 : 128,132,082.90 = 73,576,985.40 : x
  2. Step 2: Convert to fraction form
    85,520,921.40/128,132,082.90 = 73,576,985.40/x
  3. Step 3: Cross multiply
    85,520,921.40x = 128,132,082.90 × 73,576,985.40
  4. Step 4: Simplify right side
    85,520,921.40x = 9,427,572,392,804,890
  5. Step 5: Solve for x
    x = 9,427,572,392,804,890/85,520,921.40
  6. Step 6: Final answer
    x = 110,237,030.17

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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.