Home / 42,765,784-64,155,079.68-15,478,461.60

Finding the Fourth Proportional to 42,765,784, 64,155,079.68 and 15,478,461.60

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Solution

The fourth proportional to 42,765,784, 64,155,079.68 and 15,478,461.60 is: 23,220,010.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,765,784 : 64,155,079.68 = 15,478,461.60 : x
  2. Step 2: Convert to fraction form
    42,765,784/64,155,079.68 = 15,478,461.60/x
  3. Step 3: Cross multiply
    42,765,784x = 64,155,079.68 × 15,478,461.60
  4. Step 4: Simplify right side
    42,765,784x = 993,021,937,271,820.25
  5. Step 5: Solve for x
    x = 993,021,937,271,820.25/42,765,784
  6. Step 6: Final answer
    x = 23,220,010.12

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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.