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Finding the Fourth Proportional to 81,356.16, 112,192.62 and 63,444.63

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Solution

The fourth proportional to 81,356.16, 112,192.62 and 63,444.63 is: 87,492.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,356.16 : 112,192.62 = 63,444.63 : x
  2. Step 2: Convert to fraction form
    81,356.16/112,192.62 = 63,444.63/x
  3. Step 3: Cross multiply
    81,356.16x = 112,192.62 × 63,444.63
  4. Step 4: Simplify right side
    81,356.16x = 7,118,019,264.63
  5. Step 5: Solve for x
    x = 7,118,019,264.63/81,356.16
  6. Step 6: Final answer
    x = 87,492.08

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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.