Home / 30,249,300.80-45,373,951.20-8,681,981.60

Finding the Fourth Proportional to 30,249,300.80, 45,373,951.20 and 8,681,981.60

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Solution

The fourth proportional to 30,249,300.80, 45,373,951.20 and 8,681,981.60 is: 13,022,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,249,300.80 : 45,373,951.20 = 8,681,981.60 : x
  2. Step 2: Convert to fraction form
    30,249,300.80/45,373,951.20 = 8,681,981.60/x
  3. Step 3: Cross multiply
    30,249,300.80x = 45,373,951.20 × 8,681,981.60
  4. Step 4: Simplify right side
    30,249,300.80x = 393,935,809,437,697.94
  5. Step 5: Solve for x
    x = 393,935,809,437,697.94/30,249,300.80
  6. Step 6: Final answer
    x = 13,022,972.40

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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.