Home / 112,782.68-155,646.62-61,795.50

Finding the Fourth Proportional to 112,782.68, 155,646.62 and 61,795.50

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Solution

The fourth proportional to 112,782.68, 155,646.62 and 61,795.50 is: 85,281.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,782.68 : 155,646.62 = 61,795.50 : x
  2. Step 2: Convert to fraction form
    112,782.68/155,646.62 = 61,795.50/x
  3. Step 3: Cross multiply
    112,782.68x = 155,646.62 × 61,795.50
  4. Step 4: Simplify right side
    112,782.68x = 9,618,260,397.23
  5. Step 5: Solve for x
    x = 9,618,260,397.23/112,782.68
  6. Step 6: Final answer
    x = 85,281.36

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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.