Home / 42,768,020.80-64,152,031.20-20,051,214.40

Finding the Fourth Proportional to 42,768,020.80, 64,152,031.20 and 20,051,214.40

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Solution

The fourth proportional to 42,768,020.80, 64,152,031.20 and 20,051,214.40 is: 30,076,821.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,020.80 : 64,152,031.20 = 20,051,214.40 : x
  2. Step 2: Convert to fraction form
    42,768,020.80/64,152,031.20 = 20,051,214.40/x
  3. Step 3: Cross multiply
    42,768,020.80x = 64,152,031.20 × 20,051,214.40
  4. Step 4: Simplify right side
    42,768,020.80x = 1,286,326,131,786,689.25
  5. Step 5: Solve for x
    x = 1,286,326,131,786,689.25/42,768,020.80
  6. Step 6: Final answer
    x = 30,076,821.60

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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.