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Finding the Fourth Proportional to 102,620.40, 141,622.40 and 57,298.32

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Solution

The fourth proportional to 102,620.40, 141,622.40 and 57,298.32 is: 79,075.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,620.40 : 141,622.40 = 57,298.32 : x
  2. Step 2: Convert to fraction form
    102,620.40/141,622.40 = 57,298.32/x
  3. Step 3: Cross multiply
    102,620.40x = 141,622.40 × 57,298.32
  4. Step 4: Simplify right side
    102,620.40x = 8,114,725,594.37
  5. Step 5: Solve for x
    x = 8,114,725,594.37/102,620.40
  6. Step 6: Final answer
    x = 79,075.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.