Home / 74,075.74-111,124.54-21,478.40

Finding the Fourth Proportional to 74,075.74, 111,124.54 and 21,478.40

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Solution

The fourth proportional to 74,075.74, 111,124.54 and 21,478.40 is: 32,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,075.74 : 111,124.54 = 21,478.40 : x
  2. Step 2: Convert to fraction form
    74,075.74/111,124.54 = 21,478.40/x
  3. Step 3: Cross multiply
    74,075.74x = 111,124.54 × 21,478.40
  4. Step 4: Simplify right side
    74,075.74x = 2,386,777,319.94
  5. Step 5: Solve for x
    x = 2,386,777,319.94/74,075.74
  6. Step 6: Final answer
    x = 32,220.77

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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.