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Finding the Fourth Proportional to 60,415,871.40, 90,623,807.10 and 20,026,355.40

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Solution

The fourth proportional to 60,415,871.40, 90,623,807.10 and 20,026,355.40 is: 30,039,533.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,415,871.40 : 90,623,807.10 = 20,026,355.40 : x
  2. Step 2: Convert to fraction form
    60,415,871.40/90,623,807.10 = 20,026,355.40/x
  3. Step 3: Cross multiply
    60,415,871.40x = 90,623,807.10 × 20,026,355.40
  4. Step 4: Simplify right side
    60,415,871.40x = 1,814,864,568,685,643
  5. Step 5: Solve for x
    x = 1,814,864,568,685,643/60,415,871.40
  6. Step 6: Final answer
    x = 30,039,533.10

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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.