Home / 66,279.09-99,421.71-18,897.40

Finding the Fourth Proportional to 66,279.09, 99,421.71 and 18,897.40

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Solution

The fourth proportional to 66,279.09, 99,421.71 and 18,897.40 is: 28,346.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,279.09 : 99,421.71 = 18,897.40 : x
  2. Step 2: Convert to fraction form
    66,279.09/99,421.71 = 18,897.40/x
  3. Step 3: Cross multiply
    66,279.09x = 99,421.71 × 18,897.40
  4. Step 4: Simplify right side
    66,279.09x = 1,878,811,822.55
  5. Step 5: Solve for x
    x = 1,878,811,822.55/66,279.09
  6. Step 6: Final answer
    x = 28,346.98

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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.