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Finding the Fourth Proportional to 42,420.60, 63,597.60 and 19,030.68

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Solution

The fourth proportional to 42,420.60, 63,597.60 and 19,030.68 is: 28,531.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,420.60 : 63,597.60 = 19,030.68 : x
  2. Step 2: Convert to fraction form
    42,420.60/63,597.60 = 19,030.68/x
  3. Step 3: Cross multiply
    42,420.60x = 63,597.60 × 19,030.68
  4. Step 4: Simplify right side
    42,420.60x = 1,210,305,574.37
  5. Step 5: Solve for x
    x = 1,210,305,574.37/42,420.60
  6. Step 6: Final answer
    x = 28,531.08

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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.