Home / 42,768,007.20-64,152,010.80-38,438,330.40

Finding the Fourth Proportional to 42,768,007.20, 64,152,010.80 and 38,438,330.40

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Solution

The fourth proportional to 42,768,007.20, 64,152,010.80 and 38,438,330.40 is: 57,657,495.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768,007.20 : 64,152,010.80 = 38,438,330.40 : x
  2. Step 2: Convert to fraction form
    42,768,007.20/64,152,010.80 = 38,438,330.40/x
  3. Step 3: Cross multiply
    42,768,007.20x = 64,152,010.80 × 38,438,330.40
  4. Step 4: Simplify right side
    42,768,007.20x = 2,465,896,186,954,768
  5. Step 5: Solve for x
    x = 2,465,896,186,954,768/42,768,007.20
  6. Step 6: Final answer
    x = 57,657,495.60

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1.5x scale

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.