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Finding the Fourth Proportional to 66,148.84, 91,018.65 and 64,574.20

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Solution

The fourth proportional to 66,148.84, 91,018.65 and 64,574.20 is: 88,852.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,148.84 : 91,018.65 = 64,574.20 : x
  2. Step 2: Convert to fraction form
    66,148.84/91,018.65 = 64,574.20/x
  3. Step 3: Cross multiply
    66,148.84x = 91,018.65 × 64,574.20
  4. Step 4: Simplify right side
    66,148.84x = 5,877,456,508.83
  5. Step 5: Solve for x
    x = 5,877,456,508.83/66,148.84
  6. Step 6: Final answer
    x = 88,852.00

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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.