Home / 42,768,374.60-64,152,561.90-10,420,020.20

Finding the Fourth Proportional to 42,768,374.60, 64,152,561.90 and 10,420,020.20

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Solution

The fourth proportional to 42,768,374.60, 64,152,561.90 and 10,420,020.20 is: 15,630,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,374.60 : 64,152,561.90 = 10,420,020.20 : x
  2. Step 2: Convert to fraction form
    42,768,374.60/64,152,561.90 = 10,420,020.20/x
  3. Step 3: Cross multiply
    42,768,374.60x = 64,152,561.90 × 10,420,020.20
  4. Step 4: Simplify right side
    42,768,374.60x = 668,470,990,879,750.38
  5. Step 5: Solve for x
    x = 668,470,990,879,750.38/42,768,374.60
  6. Step 6: Final answer
    x = 15,630,030.30

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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.