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Finding the Fourth Proportional to 64,603.40, 96,686.40 and 56,730.20

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Solution

The fourth proportional to 64,603.40, 96,686.40 and 56,730.20 is: 84,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,603.40 : 96,686.40 = 56,730.20 : x
  2. Step 2: Convert to fraction form
    64,603.40/96,686.40 = 56,730.20/x
  3. Step 3: Cross multiply
    64,603.40x = 96,686.40 × 56,730.20
  4. Step 4: Simplify right side
    64,603.40x = 5,485,038,809.28
  5. Step 5: Solve for x
    x = 5,485,038,809.28/64,603.40
  6. Step 6: Final answer
    x = 84,903.25

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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.