Home / 105,435.66-145,500.98-57,688.91

Finding the Fourth Proportional to 105,435.66, 145,500.98 and 57,688.91

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Solution

The fourth proportional to 105,435.66, 145,500.98 and 57,688.91 is: 79,610.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,435.66 : 145,500.98 = 57,688.91 : x
  2. Step 2: Convert to fraction form
    105,435.66/145,500.98 = 57,688.91/x
  3. Step 3: Cross multiply
    105,435.66x = 145,500.98 × 57,688.91
  4. Step 4: Simplify right side
    105,435.66x = 8,393,791,924.18
  5. Step 5: Solve for x
    x = 8,393,791,924.18/105,435.66
  6. Step 6: Final answer
    x = 79,610.56

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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.