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Finding the Fourth Proportional to 45,894.30, 63,421.23 and 39,087.30

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Solution

The fourth proportional to 45,894.30, 63,421.23 and 39,087.30 is: 54,014.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,894.30 : 63,421.23 = 39,087.30 : x
  2. Step 2: Convert to fraction form
    45,894.30/63,421.23 = 39,087.30/x
  3. Step 3: Cross multiply
    45,894.30x = 63,421.23 × 39,087.30
  4. Step 4: Simplify right side
    45,894.30x = 2,478,964,643.38
  5. Step 5: Solve for x
    x = 2,478,964,643.38/45,894.30
  6. Step 6: Final answer
    x = 54,014.65

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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.