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Finding the Fourth Proportional to 53,458.40, 73,780.40 and 30,792.98

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Solution

The fourth proportional to 53,458.40, 73,780.40 and 30,792.98 is: 42,498.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,458.40 : 73,780.40 = 30,792.98 : x
  2. Step 2: Convert to fraction form
    53,458.40/73,780.40 = 30,792.98/x
  3. Step 3: Cross multiply
    53,458.40x = 73,780.40 × 30,792.98
  4. Step 4: Simplify right side
    53,458.40x = 2,271,918,381.59
  5. Step 5: Solve for x
    x = 2,271,918,381.59/53,458.40
  6. Step 6: Final answer
    x = 42,498.81

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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.