Home / 66,473,126.40-99,719,020.80-21,030,182.40

Finding the Fourth Proportional to 66,473,126.40, 99,719,020.80 and 21,030,182.40

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Solution

The fourth proportional to 66,473,126.40, 99,719,020.80 and 21,030,182.40 is: 31,548,225.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473,126.40 : 99,719,020.80 = 21,030,182.40 : x
  2. Step 2: Convert to fraction form
    66,473,126.40/99,719,020.80 = 21,030,182.40/x
  3. Step 3: Cross multiply
    66,473,126.40x = 99,719,020.80 × 21,030,182.40
  4. Step 4: Simplify right side
    66,473,126.40x = 2,097,109,196,173,393.75
  5. Step 5: Solve for x
    x = 2,097,109,196,173,393.75/66,473,126.40
  6. Step 6: Final answer
    x = 31,548,225.72

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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.