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Finding the Fourth Proportional to 85,637.22, 128,289.59 and 63,107

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Solution

The fourth proportional to 85,637.22, 128,289.59 and 63,107 is: 94,538.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,637.22 : 128,289.59 = 63,107 : x
  2. Step 2: Convert to fraction form
    85,637.22/128,289.59 = 63,107/x
  3. Step 3: Cross multiply
    85,637.22x = 128,289.59 × 63,107
  4. Step 4: Simplify right side
    85,637.22x = 8,095,971,156.13
  5. Step 5: Solve for x
    x = 8,095,971,156.13/85,637.22
  6. Step 6: Final answer
    x = 94,538.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.