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Finding the Fourth Proportional to 81,547.76, 112,578.08 and 63,357.84

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Solution

The fourth proportional to 81,547.76, 112,578.08 and 63,357.84 is: 87,466.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,547.76 : 112,578.08 = 63,357.84 : x
  2. Step 2: Convert to fraction form
    81,547.76/112,578.08 = 63,357.84/x
  3. Step 3: Cross multiply
    81,547.76x = 112,578.08 × 63,357.84
  4. Step 4: Simplify right side
    81,547.76x = 7,132,703,980.15
  5. Step 5: Solve for x
    x = 7,132,703,980.15/81,547.76
  6. Step 6: Final answer
    x = 87,466.58

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1.5x scale

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.