Home / 66,900,748.32-100,351,139.76-19,031,692.32

Finding the Fourth Proportional to 66,900,748.32, 100,351,139.76 and 19,031,692.32

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Solution

The fourth proportional to 66,900,748.32, 100,351,139.76 and 19,031,692.32 is: 28,547,543.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,900,748.32 : 100,351,139.76 = 19,031,692.32 : x
  2. Step 2: Convert to fraction form
    66,900,748.32/100,351,139.76 = 19,031,692.32/x
  3. Step 3: Cross multiply
    66,900,748.32x = 100,351,139.76 × 19,031,692.32
  4. Step 4: Simplify right side
    66,900,748.32x = 1,909,852,015,873,638.75
  5. Step 5: Solve for x
    x = 1,909,852,015,873,638.75/66,900,748.32
  6. Step 6: Final answer
    x = 28,547,543.40

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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.