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Finding the Fourth Proportional to 60,860.40, 91,290.80 and 18,740.24

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Solution

The fourth proportional to 60,860.40, 91,290.80 and 18,740.24 is: 28,110.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,860.40 : 91,290.80 = 18,740.24 : x
  2. Step 2: Convert to fraction form
    60,860.40/91,290.80 = 18,740.24/x
  3. Step 3: Cross multiply
    60,860.40x = 91,290.80 × 18,740.24
  4. Step 4: Simplify right side
    60,860.40x = 1,710,811,501.79
  5. Step 5: Solve for x
    x = 1,710,811,501.79/60,860.40
  6. Step 6: Final answer
    x = 28,110.42

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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.