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Finding the Fourth Proportional to 101,050.40, 139,459.95 and 64,282.11

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Solution

The fourth proportional to 101,050.40, 139,459.95 and 64,282.11 is: 88,715.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,050.40 : 139,459.95 = 64,282.11 : x
  2. Step 2: Convert to fraction form
    101,050.40/139,459.95 = 64,282.11/x
  3. Step 3: Cross multiply
    101,050.40x = 139,459.95 × 64,282.11
  4. Step 4: Simplify right side
    101,050.40x = 8,964,779,846.49
  5. Step 5: Solve for x
    x = 8,964,779,846.49/101,050.40
  6. Step 6: Final answer
    x = 88,715.93

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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.