Home / 78,894,681.60-118,286,035.20-30,353,779.20

Finding the Fourth Proportional to 78,894,681.60, 118,286,035.20 and 30,353,779.20

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Solution

The fourth proportional to 78,894,681.60, 118,286,035.20 and 30,353,779.20 is: 45,509,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,894,681.60 : 118,286,035.20 = 30,353,779.20 : x
  2. Step 2: Convert to fraction form
    78,894,681.60/118,286,035.20 = 30,353,779.20/x
  3. Step 3: Cross multiply
    78,894,681.60x = 118,286,035.20 × 30,353,779.20
  4. Step 4: Simplify right side
    78,894,681.60x = 3,590,428,194,904,228
  5. Step 5: Solve for x
    x = 3,590,428,194,904,228/78,894,681.60
  6. Step 6: Final answer
    x = 45,509,128.40

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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.